From: Jaegeuk Kim jaegeuk@kernel.org
commit da35fe96d12d15779f3cb74929b7ed03941cf983 upstream.
This patch increases the threshold that limits the reserved root space from 0.2% to 12.5% by using simple shift operation.
Typically Android sets 128MB, but if the storage capacity is 32GB, 0.2% which is around 64MB becomes too small. Let's relax it.
Cc: stable@vger.kernel.org Reported-by: Aran Dalton arda@allwinnertech.com Reviewed-by: Chao Yu chao@kernel.org Signed-off-by: Jaegeuk Kim jaegeuk@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- fs/f2fs/super.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -306,10 +306,10 @@ static void f2fs_destroy_casefold_cache(
static inline void limit_reserve_root(struct f2fs_sb_info *sbi) { - block_t limit = min((sbi->user_block_count << 1) / 1000, + block_t limit = min((sbi->user_block_count >> 3), sbi->user_block_count - sbi->reserved_blocks);
- /* limit is 0.2% */ + /* limit is 12.5% */ if (test_opt(sbi, RESERVE_ROOT) && F2FS_OPTION(sbi).root_reserved_blocks > limit) { F2FS_OPTION(sbi).root_reserved_blocks = limit;